I was curious what would make my AM radio not work, but my FM and CD works fine.
When i switch from FM to AM I get nothing but fuzz...
Is something not hooked up right?
I thought the FM and AM were in one wire?

What about trying to clean the screw connection on the antenna?
I have no recommendation on how to clean the female threaded part. I believe it bottoms out, but that's why it can hold moisture. Gotta tap and die set?

I'm not 100% sure as I've never looked at the antenna on the ranger but if it is a screw on then the base should be able to be removed. Otherwise a tap and die set would work, also make sure that someone didn't teflon tape it on.

aftermarket radios are made for sound quality, AM, on its best day cant do that, therefore aftermarket companys put no $ in makin it work. if you notice almost all aftermarket radios dont have as good of FM either, but it sounds so much better noone cares.almost all factory radios are a mono signal on radio, sounds like s#@t but gets great reception.